Iterative Model Reconstruction (IMR) Algorithm for Reduced Radiation Dose Renal Artery CT Angiography with Different Tube Voltage Protocols

Overview

Journal Radiol Med

Specialty Radiology

Date 2017 Oct 24

PMID 29058232

Citations 4

Authors

Le Qin

Zepeng Ma

Fuhua Yan

Wenjie Yang

Affiliations

Soon will be listed here.

Abstract

Purpose: To investigate the image quality (IQ) of reduced radiation dose (RRD) renal artery CT angiography (CTA) using iterative model reconstruction (IMR) algorithm at different tube voltage.

Methods: Renal artery CTA scans were acquired with a 256-MDCT scanner on 84 patients assigned into four groups. Group 4 was scanned as standard radiation dose (SRD) group: 120 kVp, automatic tube current modulation (ATCM) technique with an Image Quality Index of 20, and filtered back projection (FBP) algorithm. Tube voltage for three RRD groups was 80 kVp in group 1, 100 kVp in group 2, and 120 kVp in group 3, and all three groups were with image quality index of 18 and IMR algorithm. Image noise, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were measured. Subjective evaluation including diagnostic confidence, vessel artifact and intravascular contrast were performed. The effective radiation dose was recorded.

Results: Effective radiation dose was reduced in three RRD groups compared to group 4. Intravascular contrast was significantly better in group 1 and 2 than in group 3, and artifacts decreased in group 2 than in group 3 (P < 0.05). Vascular SNR, CNR and image noise improved in three IMR groups than those in FBP group (P < 0.05). Furthermore, among three IMR groups, group 1 and 2 achieved better objective evaluation than group 3 (P < 0.05).

Conclusions: IMR along with RRD for renal artery CTA improved image quality compared to SRD protocol using FBP. On top of that, lower tube voltage tended to be more optimal.

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References

Park S, Kim Y, Lee J, Park H . Knowledge-based iterative model reconstruction (IMR) algorithm in ultralow-dose CT for evaluation of urolithiasis: evaluation of radiation dose reduction, image quality, and diagnostic performance. Abdom Imaging. 2015; 40(8):3137-46. DOI: 10.1007/s00261-015-0504-y. View

Liu P, Platt J . CT angiography of the renal circulation. Radiol Clin North Am. 2010; 48(2):347-65, viii-ix. DOI: 10.1016/j.rcl.2010.02.005. View

Kim H, Yoo S, Jeon T, Kim J . Model-based iterative reconstruction in ultra-low-dose pediatric chest CT: comparison with adaptive statistical iterative reconstruction. Clin Imaging. 2016; 40(5):1018-22. DOI: 10.1016/j.clinimag.2016.06.006. View

Cho E, Yu J, Ahn J, Kim J, Chung J, Lee H . CT angiography of the renal arteries: comparison of lower-tube-voltage CTA with moderate-concentration iodinated contrast material and conventional CTA. AJR Am J Roentgenol. 2012; 199(1):96-102. DOI: 10.2214/AJR.11.7450. View

Noel P, Kohler T, Fingerle A, Brown K, Zabic S, Munzel D . Evaluation of an iterative model-based reconstruction algorithm for low-tube-voltage (80 kVp) computed tomography angiography. J Med Imaging (Bellingham). 2015; 1(3):033501. PMC: 4478879. DOI: 10.1117/1.JMI.1.3.033501. View

Sarkodieh J, Walden S, Low D . Imaging and management of atherosclerotic renal artery stenosis. Clin Radiol. 2013; 68(6):627-35. DOI: 10.1016/j.crad.2012.11.007. View

Davarpanah A, Pahade J, Cornfeld D, Ghita M, Kulkarni S, Israel G . CT angiography in potential living kidney donors: 80 kVp versus 120 kVp. AJR Am J Roentgenol. 2013; 201(5):W753-60. DOI: 10.2214/AJR.12.10439. View

Padole A, Singh S, Lira D, Blake M, Pourjabbar S, Ali Khawaja R . Assessment of Filtered Back Projection, Adaptive Statistical, and Model-Based Iterative Reconstruction for Reduced Dose Abdominal Computed Tomography. J Comput Assist Tomogr. 2015; 39(4):462-7. DOI: 10.1097/RCT.0000000000000231. View

Gervaise A, Osemont B, Lecocq S, Noel A, Micard E, Felblinger J . CT image quality improvement using Adaptive Iterative Dose Reduction with wide-volume acquisition on 320-detector CT. Eur Radiol. 2011; 22(2):295-301. DOI: 10.1007/s00330-011-2271-7. View

10.

Oda S, Utsunomiya D, Funama Y, Katahira K, Honda K, Tokuyasu S . A knowledge-based iterative model reconstruction algorithm: can super-low-dose cardiac CT be applicable in clinical settings?. Acad Radiol. 2013; 21(1):104-10. DOI: 10.1016/j.acra.2013.10.002. View

11.

Ludemann L, Nafz B, Elsner F, Grosse-Siestrup C, Meissler M, Persson P . Dependence of renal blood flow on renal artery stenosis measured using CT angiography. Rofo. 2010; 183(3):267-73. DOI: 10.1055/s-0029-1245904. View

12.

Pang L, Zhao Y, Dong H, Shi H, Yang W, Zhang H . High-Pitch Dual-Source Computed Tomography Renal Angiography Comparison With Conventional Low-Pitch Computed Tomography Angiography: Image Quality, Contrast Medium Volume, and Radiation Dose. J Comput Assist Tomogr. 2015; 39(5):737-40. DOI: 10.1097/RCT.0000000000000268. View

13.

Naidu S, Kriegshauser J, Paden R, He M, Wu Q, Hara A . Ultra-low-dose computed tomographic angiography with model-based iterative reconstruction compared with standard-dose imaging after endovascular aneurysm repair: a prospective pilot study. Abdom Imaging. 2014; 39(6):1297-303. DOI: 10.1007/s00261-014-0166-1. View

14.

Koc G, Courtier J, Phelps A, Marcovici P, MacKenzie J . Computed tomography depiction of small pediatric vessels with model-based iterative reconstruction. Pediatr Radiol. 2014; 44(7):787-94. DOI: 10.1007/s00247-014-2899-y. View

15.

Boateng F, Greco B . Renal artery stenosis: prevalence of, risk factors for, and management of in-stent stenosis. Am J Kidney Dis. 2012; 61(1):147-60. DOI: 10.1053/j.ajkd.2012.07.025. View

16.

Murphy K, Crush L, Twomey M, McLaughlin P, Mildenberger I, Moore N . Model-Based Iterative Reconstruction in CT Enterography. AJR Am J Roentgenol. 2015; 205(6):1173-81. DOI: 10.2214/AJR.14.13321. View

17.

Nakamoto A, Kim T, Hori M, Onishi H, Tsuboyama T, Sakane M . Clinical evaluation of image quality and radiation dose reduction in upper abdominal computed tomography using model-based iterative reconstruction; comparison with filtered back projection and adaptive statistical iterative reconstruction. Eur J Radiol. 2015; 84(9):1715-23. DOI: 10.1016/j.ejrad.2015.05.027. View

18.

Vardhanabhuti V, Riordan R, Mitchell G, Hyde C, Roobottom C . Image comparative assessment using iterative reconstructions: clinical comparison of low-dose abdominal/pelvic computed tomography between adaptive statistical, model-based iterative reconstructions and traditional filtered back projection in 65.... Invest Radiol. 2013; 49(4):209-16. DOI: 10.1097/RLI.0000000000000017. View

19.

Colagrande S, Origgi D, Zatelli G, Giovagnoni A, Salerno S . CT exposure in adult and paediatric patients: a review of the mechanisms of damage, relative dose and consequent possible risks. Radiol Med. 2014; 119(10):803-10. DOI: 10.1007/s11547-014-0393-0. View

20.

Yasaka K, Katsura M, Akahane M, Sato J, Matsuda I, Ohtomo K . Model-based iterative reconstruction and adaptive statistical iterative reconstruction: dose-reduced CT for detecting pancreatic calcification. Acta Radiol Open. 2016; 5(1):2058460116628340. PMC: 4724768. DOI: 10.1177/2058460116628340. View